Special Report

This Is the World's Largest Religion

3. Unaffiliated
> Global population: 1.19 billion
> Pct. of global population: 15.6%
> Largest population: China (720.10 million)

Source: ozgurdonmaz / E+ via Getty Images

2. Islam
> Global population: 1.91 billion
> Pct. of global population: 24.9%
> Largest population: Indonesia (229.62 million)

1. Christianity
> Global population: 2.38 billion
> Pct. of global population: 31.1%
> Largest population: United States (252.87 million)

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